Johnson is re-signing with Buffalo on a one-year contract, Joe Buscaglia of The Athletic reports.
Johnson (concussion) doesn't carry an injury designation into Sunday's wild-card round game against the Steelers.
Johnson (concussion) will be limited during practice Wednesday, Chris Brown of the Bills Radio Network reports.
Johnson rushed five times for 22 yards in Sunday's 27-21 win over the Patriots.
Johnson (shoulder) doesn't have an injury designation for Sunday's game against the Patriots.
Johnson (shoulder) was a limited participant in Thursday's practice.
Johnson (shoulder) was a limited practice participant Wednesday.
Johnson (shoulder) is listed as inactive Saturday against the Chargers.
Johnson (shoulder) is listed as questionable for Saturday's game against the Chargers.
Johnson (shoulder) was a limited participant in practice Wednesday.